3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php abstract class test{ abstract public function hi(): string; } class hello extends test { public function hi(): string { return array(); } }
based on XGvIp
Output for 7.0.0 - 7.3.0alpha1
Output for 5.3.18 - 5.6.28
Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/7Brq7 on line 4
Process exited with code 255.